如何通过swift将底线添加到子视图中的多个UITextField？

Question

I need to add bottom line to all of my textfield in my subview.

This is my code.

for view in self.detailView.subviews as! [UIView] {
        if let textField = view as? UITextField {
            //                if textField.text == "" {
            //                    // show error
            //                    return
            //                }

            var border = CALayer()
            var width = CGFloat(1.0)
            border.borderColor = UIColor.whiteColor().CGColor
            border.frame = CGRect(x: 0, y: textField.frame.size.height - width, width:  textField.frame.size.width, height: textField.frame.size.height)

            border.borderWidth = width

            textField.layer.addSublayer(border)
            textField.layer.masksToBounds = true

            return
        }
    }

But it only add bottom line to the last textfield not all of it. This is What i got

How can i fix this? Thanks!

Answer 1

You have added return keyword at end.

Try to loop whole view with its subviews like as

for view in self.view.subviews as! [UIView] {
            if let textField = view as? UITextField {
                var border = CALayer()
                var width = CGFloat(1.0)
                border.borderColor = UIColor.whiteColor().CGColor
                border.frame = CGRect(x: 0, y: textField.frame.size.height - width, width:  textField.frame.size.width, height: width)

                border.borderWidth = width
                textField.borderStyle = UITextBorderStyle.None
                textField.layer.addSublayer(border)
                textField.layer.masksToBounds = true
            }
        }

I have added one more line of code textField.borderStyle = UITextBorderStyle.None so that if the border style is different in design then it will change by programmatically.

Answer 2

Very simple and easy method Just put background image of textfield This image have a white background and underline so you use transparent background instead white background